Grain separator



April 26,1927.

' N. B. SANDVIG GRAIN SEPARATOR Filed Dec. 21. 1925 3 Sheets-Sheet lApril 26, 927. 1,626,585

N. B. SANDVIG GRAIN SEPARATOR Filed Dec. 21. 1925 :s sh ets-sheets gmnto'a J0 f" N S a/ 205 Patented Apr, 2 6 1927 naronn B. sannvre,oreRArTeN, NOBTI-I DAKQTA.

GRAIN sEPARATOR.

Applicationfiled December 21,: 19, 2 5.;; Serial- No, 76,3503

. This,invention relates. to new .and useful mr r ments i epa e s and paat c erlyto, devices for separating or grading grain eds 1: 'One objectof the invention, is to providea device of this character bymeans ofwhich certain seeds may beefficiently separated from other seeds, I

Another object is to provide a novel form ofseparating. drum, by means.of which seeds are properly gra'd'ed and the desired seeds delivered atone point, while the remainder are delivered at another point.

Another object is to provide'a device of this character which includesmeans for impartingjntermittent jerking .movements to the separatingdrum during the rotary movement of the drum,

Other objects and advantages will be ap-' parent from thefollowingdescriptionwhen taken in; connection withthe accompanyingdrawings.

In the drawings:

Figure 1 is a side elevation of a grain separating machine made inaccordance with the present invent-ion.

Figure2 is a detail perspective view of the lower portion of themachi-ne,.showing the vibrating chute, and perating means therefor. IFigure 3 is an end elevation of the ma-, chine showing the meansforproducing the jerking motion to the drum.

Figure 4 is an enlarged vertical sectional view on the line 4-4: of.Figure 3. I r I I Figure 5 is an elevation of the notchedwheel of thedrum shaft.

Figure 6 is a side elevation of same, Figure 7 is a side elevation ofthe loose bevel. gear of the drum shaft;

Figure 8 is a front elevation, or face view,

I of the loose bevel gear.

Figure 9 1s a vertical transversesectional view on the line 99 0f Flgure4.

al view of a ,portion of the screen drum;

strips,

Referring particularly to the accompanying drawings, 10 represents asuitable frame having the hopper 11 mounted in its upper portion, saidhopper being provided with a discharge spout 12. In the opposite ends ofthe frame, and at different levels, are mounted the cross members 13 and14, re-

spectively, and carried by said members are Figure 10 is a fragmentarydetail sectionthebearing brackets 15,. forrotatably sup.- porting, theshafts 16. of the ends of the ,sepa ratinggdru n li On the sides oftheend of, the..fra1ne,.adjacentends of the cross. member.13, arethebearingbrackets 18 in which are supported }the endsof the, transverseshaft 19,,said shaft having on oneend the large drive sprocket. ,wheel'20, and, the bevel. gear 21,v to wliich reference willbeanade laterherein, The sproc ket wheel 20 is provided wi tl,1 ,a crank handle. 22,.which is grasped to, rotatethesame. 1 In the lower. portion of. theframe, beneath the drum, is a transverse. crankshaft 23, andfi xed onone endot this shaft isa small sprocketavheelQd, a drive. chain 25engaging around. the sprockets 2 0 and 24.; Se: cured-at their.lowerends, to, the other end of' the frame are. the upwardly extending 75,spring arms. 26, and secured, to, the upper ends of said armsis theupper end of the downwardly. and forwardly inclined chute 27, theupperend of said v chute, being disposed directly beneath the lower rear end'of the drum, to. receive seeds therefrom andv convey same to th e.frontof tlQQIIltChl-HB. Connected ,to, the cranksof the crank shaft 23,and to the .low eruforward end of; the I chute 27, are.the;links.28:'.,: Y 8 The drum comprises an outer imperforate cylinder.29., within ,which. isrdi'sposed a .re-. ticulated cylinder. 30, thelatter being spaced. from theformeri The. inner; cylinder. is made upofthe pluralityof regularlylspaced fiat rings 31-, the inner edge facesof which are fornied with regularly spaced notches 32, receiving; thecorrespondingly notched strips which are thereby spac ed at distances.equa l to the gdjstanqs.. between the rings: Rings 34 of slightlysmaller diam;

eter than. the rings 31, are placedwithinj the inner. cylinder to holdthestrips in place,

a narrow. ring 3.4L being placed. at, the upper end of,t l 1e,drum,..while a wider one '33: s placed; at the. ow r. nd. et i f;.. a lWider r -be Pmi er -ted. a.. t b e isense yonrlhe et er nd. otl heo ter,intn p f rate linder-1, 95 It will elnqted t at the lower end of theouter cylinder 29 lies 1 5 in position to discharge onto the upper endof thechute 27. On the periphery of certain of. the rings 31 are formedthe lugs 35, which engage with the inner face of the outer cylinder, tohold the same in proper spaced relation to the inner cylinder, andthereby provide a space, between the cylinders for the smaller seeds topass, which have escaped j 'throughthe meshes of the inner cylinder.

wheel -is-forined a single lug 41, which is disposed between the lugs38, and an eye 42. A (2011 spring 43 hasits opposite ends secured in theeyes 39 and 42. Thehub 44,

V in g of the of the wheel 36 engages with the face of the bevel gear40, whereby to hold the wheels and prevent bind-' in proper spacedrelation,

lugs and spring. On a' second crosszmember 45, on the frontend of theframe," mmediatelyabove the cross member 13,"is mounted a. bracket 46,and pivota'lly arm 4?,

- the bevel gear 40 V -with one of the lugs 38, which causes the V thenotched wheel.

supported, at oneend, in this bracket is an periphery of the notchedwheel 36, and rotatablysupports a spoked wheel 48. outeriends of thespokes of the gage in the notches of the wheel 36. On the cross member13 is a hook 49, and disposed vertically'through the arm 47. is a hook50, the upperend of which is threaded and has a winged'nut 51 engagedthereon; A; coil spring 52 has its ends engaged with the hooks 49 and50, forurging the arm downwardly for the purpose of insuring firmcontact of the spokes of the wheel 48 with The winged'nut 51 permitsadjusting the tension of the coil spring 52. The before-mentioned bevelgear 21' meshes with the bevel gear 40.

Upon'turnmg the. sprocket wheel the shaft 19, at the upper endofthe'drum 1'? will be rotated, and its bevel gear 21 turn until the lug41 engages gear to turn the shaft '16, and the notched wheel '36. Therotation V of the notched ,wheel causes the drum to be rotated, and

at the same time'the spokes of the wheel 48 will engage in the notchesof the wheel 36.

i r The tension of the spring 52 willexert a pull on the wheel 48sojthat the spoke engaged with the wheel 36 will give'a sudden forwardrotary impulse to the drum, wherei upon the next spoke'will snap intothe next the free end of which overlies the The wheel 48 enimpartingnotch of the wheel. 'At the same time the spring the mo'ven'ient of thegear 40 which brought its lug 41 into engagement with one of the Thenthe jerk is given by the lugs 38.

wheel, the spring 43 recoils and spoked draws cause the partial rotationof the spoked wheel, and the elevation of the advanced spoke out of thenotch of the wheel. rotation of the gear 40 is constant, so that itimmediately engages its lug 41 with the lug 38 ofthe wheel 36, andcontinuesthe forward driving of said wheel. Thus" the '43 was broughtunder tension, by.

The

the wheel 86 forwardly so as to j drum is partially rotated, by thepositive 7 drive betweenthe gears 21 and 40, and intermittently the drumis given a sudden forward rotary impulse by the snapping of the adjacentspokes ofthe wheel 48 into two adj acent notches of the wheel 36. Thisvmotion causesthe jostling of the seeds within the drum, and effectsproper separation thereof, and the passagerof certain seeds through theopenings of the inner cylinder,

which aire discharged onto the upper end of the chute, while theremainder of the seeds pass out through the lower end of the innercylinder.

What is claimed is:

1. A driving means including a driven shaft, peripherally notched wheelfixed on the driven shaft,a gear loosely mounted on the driven shaft, aspring connecting the wheel and gear, projections on the wheel and gearfor causing positive drivingcon-j nection therebetween, and aresiliently held member engaged in the notched wheel for forwardincreased rotative impulses and stopping driven shaft.

2. A driving means including a driven shaftand having afdriving gearthereon, a

9. movements to the I shaft, a'transverseshaft adjacent the driven 4'peripherally notched wheel fired on the driven shaft, a gear looselysupported on the driven shaft outwardly of the wheel, spaced lugs on thewheel, a lug onthe loose gear engaged between the spaced lugs-forintermittent engagement therewith, a spring secured, at itsfends tothenotched wheel and loose gear, and aspring pressed wheel having spokesengaged in the notches of the notched. wheel, the dr1v1-ng gearmeshingwith the loose gear.

In testimonywhereofll affix my signa-' ture.

' NAFORD B. SANDVIG..

